Add unit tests for no-go area round-trip and waypoint extraction
15 tests covering:
- No-go area generation (namespace, structure, multiple areas)
- No-go area parsing (namespaced, non-namespaced, min 3 points, empty)
- Full round-trip: generate → parse → verify no-go areas match
- Complete planning state round-trip (waypoints + tracks + no-go areas)
- extractWaypoints: explicit waypoints, multi-segment, Douglas-Peucker,
empty tracks
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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